/* ==========================================================================
   FIELD NOTES — Ghost theme
   Visual language: Funktion design system (Rams/Braun-inspired restraint).
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Jost:wght@300;400;500;600;700&family=Source+Serif+4:ital,opsz,wght@0,8..60,400;0,8..60,600;1,8..60,400&family=Space+Mono:wght@400;700&display=swap');

/* ---- tokens ---- */
:root {
  --color-paper-50: #F7F3E4;
  --color-paper-100: #F0EBD6;
  --color-paper-200: #ECE6CD;
  --color-paper-300: #DED7BC;
  --color-paper-400: #D6CFB2;

  --color-ink-100: #7C8A8C;
  --color-ink-200: #566E77;
  --color-ink-300: #3A5766;
  --color-ink-400: #0A3A52;
  --color-ink-500: #003049;

  --color-signal-orange: #F77F00;
  --color-signal-red: #D62828;
  --color-signal-navy: #003049;

  --color-dark-100: #24313A;
  --color-dark-200: #2C3A42;
  --color-dark-300: #142026;
  --color-dark-400: #18262D;
  --color-dark-500: #0F1A20;
  --color-dark-600: #0A151A;

  --bg: var(--color-paper-200);
  --surface: var(--color-paper-50);
  --surface-2: var(--color-paper-100);
  --ink: var(--color-ink-500);
  --ink-2: var(--color-ink-400);
  --muted: var(--color-ink-300);
  --mono-fg: var(--color-ink-200);
  --line: var(--color-paper-400);
  --line-2: var(--color-paper-300);
  --disabled-fg: var(--color-ink-100);
  --grad-a: #E7E0C6;
  --reading: #2A2A24;
  --card-dark: var(--color-signal-navy);
  --on-card: var(--color-paper-50);

  --accent: var(--color-signal-orange);
  --accent-alert: var(--color-signal-red);

  --font-sans: 'Jost', system-ui, sans-serif;
  --font-serif: 'Source Serif 4', Georgia, serif;
  --font-mono: 'Space Mono', ui-monospace, monospace;

  --radius: 2px;
}

[data-theme="dark"] {
  --bg: var(--color-dark-500);
  --surface: var(--color-dark-400);
  --surface-2: var(--color-dark-300);
  --ink: var(--color-paper-200);
  --ink-2: #CBC6B2;
  --muted: #9AA6A0;
  --mono-fg: #93A6AC;
  --line: var(--color-dark-200);
  --line-2: var(--color-dark-100);
  --disabled-fg: #5E6E74;
  --grad-a: var(--color-dark-100);
  --reading: #E7E1CE;
  --card-dark: var(--color-dark-600);
  --on-card: var(--color-paper-200);
}

/* ---- reset / base ---- */
* { box-sizing: border-box; }
html { background: var(--bg); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  transition: background .18s ease, color .18s ease;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
p { text-wrap: pretty; }

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}
.container--narrow { max-width: 728px; }
.container--wide { max-width: 1008px; }
.container--article { max-width: 728px; }

.label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mono-fg);
}

/* ---- header ---- */
.site-header {
  border-bottom: 1px solid var(--line);
}
.site-header__inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 32px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-header__left {
  display: flex;
  align-items: center;
  gap: 40px;
}
.site-brand {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.site-nav {
  display: flex;
  gap: 28px;
}
.nav-link {
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--muted);
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
}
.nav-link--active {
  color: var(--ink);
  font-weight: 500;
  border-bottom: 2px solid var(--accent);
}
.site-header__right {
  display: flex;
  align-items: center;
  gap: 20px;
}

/* ---- buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-weight: 500;
  letter-spacing: 0.02em;
  border-radius: var(--radius);
  cursor: pointer;
  border: none;
  outline: none;
  transition: filter .15s ease, background .15s ease, color .15s ease;
}
.btn--sm { height: 36px; padding: 0 18px; font-size: 13px; }
.btn--md { height: 44px; padding: 0 24px; font-size: 15px; }
.btn--lg { height: 52px; padding: 0 30px; font-size: 17px; }
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { filter: brightness(0.92); }
.btn--secondary { background: transparent; color: var(--ink); border: 1.5px solid var(--ink); }
.btn--secondary:hover { background: var(--ink); color: var(--bg); }
.btn--ghost { background: transparent; color: var(--muted); }
.btn--ghost:hover { color: var(--accent); }

/* ---- badges ---- */
.badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--radius);
}
.badge--default { background: var(--line-2); color: var(--ink); }
.badge--accent { background: var(--accent); color: #fff; }
.badge--outline { background: transparent; color: var(--ink); border: 1px solid var(--ink); }

/* ---- form field ---- */
.field {
  height: 44px;
  padding: 0 14px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 300;
  color: var(--ink);
  background: var(--surface);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  outline: none;
}
.field::placeholder { color: var(--mono-fg); }
.inline-form { display: flex; gap: 8px; }

/* ---- dark-mode switch ---- */
.switch { display: inline-flex; align-items: center; cursor: pointer; }
.switch input { position: absolute; opacity: 0; width: 0; height: 0; }
.switch__track {
  width: 48px;
  height: 26px;
  border-radius: 13px;
  background: var(--line);
  position: relative;
  transition: background .18s ease;
  flex: none;
  display: inline-block;
}
.switch input:checked + .switch__track { background: var(--accent); }
.switch__knob {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #FBF8EE;
  box-shadow: 0 1px 3px rgba(0,0,0,.3);
  transition: left .18s ease;
}
.switch input:checked + .switch__track .switch__knob { left: 25px; }

/* ---- avatar ---- */
.avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--ink); flex-shrink: 0; }
.avatar--lg { width: 40px; height: 40px; }
.avatar--xl { width: 56px; height: 56px; }
.author-hero .avatar--xl { width: 96px; height: 96px; }

/* ---- image placeholders (until real images are set) ---- */
.img-placeholder {
  background: repeating-linear-gradient(45deg, var(--grad-a), var(--grad-a) 10px, var(--line-2) 10px, var(--line-2) 20px);
  border: 1px solid var(--ink);
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: flex-end;
  padding: 20px;
}
.img-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mono-fg);
  background: var(--surface);
  padding: 4px 8px;
}

/* ---- hero / featured post ---- */
.hero { display: block; padding: 48px 0 64px; cursor: pointer; }
.hero__eyebrow { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.hero__title {
  margin: 0 0 20px;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 64px;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--ink);
  max-width: 900px;
}
.hero__excerpt {
  margin: 0 0 24px;
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: 21px;
  line-height: 1.5;
  color: var(--muted);
  max-width: 640px;
}
.hero__meta { display: flex; align-items: center; gap: 12px; margin-bottom: 32px; font-family: var(--font-sans); font-size: 14px; color: var(--ink); }
.hero__meta .label { font-size: 12px; }
.hero__image { height: 440px; }

/* ---- section head ---- */
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin: 0 0 32px;
  border-top: 1px solid var(--line);
  padding-top: 32px;
}
.section-head h2 {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 30px;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.view-all { font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--mono-fg); cursor: pointer; }
.view-all:hover { color: var(--accent); }

/* ---- post grid + card ---- */
.post-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  padding-bottom: 96px;
}
.post-grid--related { padding-bottom: 0; }
.card-wrap { display: flex; flex-direction: column; gap: 14px; }
.card {
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
  height: 420px;
  display: flex;
  flex-direction: column;
}
.card__image {
  height: 200px;
  flex: none;
  background: repeating-linear-gradient(45deg, var(--grad-a), var(--grad-a) 8px, var(--line-2) 8px, var(--line-2) 16px);
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 16px;
}
.card__image .dot { width: 12px; height: 12px; border-radius: 50%; background: var(--accent); }
.card__image .img-label { font-size: 11px; padding: 3px 7px; }
.card__body { padding: 20px; overflow: hidden; }
.card__eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--mono-fg);
  margin: 0 0 8px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.card__title {
  margin: 0 0 10px;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 20px;
  line-height: 1.3;
  color: var(--ink);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card__desc {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 15px;
  line-height: 1.55;
  color: var(--muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-meta { display: flex; align-items: center; gap: 8px; padding: 0 20px; font-family: var(--font-mono); font-size: 12px; color: var(--mono-fg); }

/* ---- post ---- */
.post-head { padding: 56px 24px 0; }
.post-title {
  margin: 20px 0 24px;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 48px;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.post-byline {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
}
.byline-name { margin: 0; font-family: var(--font-sans); font-size: 14px; font-weight: 500; color: var(--ink); }
.byline-meta { margin: 2px 0 0; font-family: var(--font-mono); font-size: 12px; color: var(--mono-fg); }
.post-hero-image { height: 440px; margin: 0 0 48px; }

.article-body {
  padding: 0 24px 64px;
  font-family: var(--font-serif);
  font-size: 19px;
  line-height: 1.75;
  color: var(--reading);
}
.article-body p { margin: 0 0 24px; }
.article-body h2, .article-body h3 {
  font-family: var(--font-sans);
  font-weight: 500;
  color: var(--ink);
  line-height: 1.3;
  margin: 40px 0 16px;
}
.article-body blockquote {
  margin: 40px 0;
  padding-left: 24px;
  border-left: 3px solid var(--accent);
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 24px;
  line-height: 1.5;
  color: var(--ink);
}
.article-body figure { margin: 40px 0; }
.article-body img { border: 1px solid var(--ink); }
.article-body a { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
.article-body--about { font-size: 19px; line-height: 1.7; color: var(--muted); font-family: var(--font-sans); font-weight: 300; }
.article-body--about p { margin: 0 0 20px; }

.newsletter-cta {
  background: var(--card-dark);
  padding: 32px;
  margin: 48px 24px;
  max-width: 728px;
  margin-left: auto;
  margin-right: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.newsletter-cta .nl-eyebrow { margin: 0 0 6px; font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--on-card); opacity: 0.7; }
.newsletter-cta .nl-title { margin: 0; font-family: var(--font-sans); font-weight: 500; font-size: 19px; color: var(--on-card); }
.newsletter-cta .field { background: var(--surface); }

.author-box {
  border: 1px solid var(--ink);
  padding: 28px;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  margin-bottom: 64px;
}
.author-box .author-name { margin: 0 0 6px; font-family: var(--font-sans); font-weight: 500; font-size: 17px; color: var(--ink); }
.author-box .author-bio { margin: 0; font-family: var(--font-sans); font-weight: 300; font-size: 14px; line-height: 1.6; color: var(--muted); }

.related-head { margin: 0 0 32px; font-family: var(--font-sans); font-weight: 500; font-size: 24px; color: var(--ink); }
.related-wrap { border-top: 1px solid var(--line); padding-top: 48px; padding-bottom: 96px; }

/* ---- tag / author hero ---- */
.tag-hero, .about-hero > div:first-child { padding: 56px 0 40px; }
.page-title { margin: 12px 0 16px; font-family: var(--font-sans); font-weight: 500; font-size: 56px; letter-spacing: -0.02em; color: var(--ink); }
.lede { margin: 0; font-family: var(--font-sans); font-weight: 300; font-size: 19px; line-height: 1.6; color: var(--muted); max-width: 600px; }
.post-count { margin: 16px 0 0; font-family: var(--font-mono); font-size: 12px; color: var(--mono-fg); }
.tag-posts { border-top: 1px solid var(--line); padding-top: 40px; padding-bottom: 96px; }

.about-hero {
  padding: 64px 0 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about-hero .page-title { font-size: 48px; line-height: 1.1; }
.about-image { height: 420px; margin-top: 24px; }
.stat-grid { padding: 80px 24px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.stat-card {
  background: var(--card-dark);
  padding: 24px;
  height: 132px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.stat-card .label { color: var(--on-card); opacity: 0.7; }
.stat-value { font-family: var(--font-sans); font-weight: 600; font-size: 48px; color: var(--accent); letter-spacing: -0.02em; }
.newsletter-inline {
  border-top: 1px solid var(--line);
  padding: 48px 24px 96px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.newsletter-inline .nl-title { margin: 0 0 8px; font-family: var(--font-sans); font-weight: 500; font-size: 22px; color: var(--ink); }
.newsletter-inline .nl-sub { margin: 0; font-family: var(--font-sans); font-weight: 300; font-size: 14px; color: var(--muted); }

.author-hero {
  padding: 64px 24px 48px;
  display: flex;
  gap: 32px;
  align-items: center;
  border-bottom: 1px solid var(--line);
}
.author-hero .page-title { font-size: 36px; margin: 0 0 8px; }
.author-hero .lede { margin: 0 0 16px; font-family: var(--font-serif); font-size: 17px; }
.badge-row { display: flex; gap: 8px; }

.list-card {
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 8px 0;
}
.list-card__row {
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line-2);
}
.list-card__row:last-child { border-bottom: none; }
.list-card__label { font-family: var(--font-sans); font-size: 15px; color: var(--ink); }
.list-card__value { font-family: var(--font-mono); font-size: 12px; color: var(--mono-fg); }
.list-card__row:hover .list-card__label,
.list-card__row:hover .list-card__value { color: var(--accent); }

/* ---- footer ---- */
.site-footer { border-top: 1px solid var(--line); }
.footer__cols {
  max-width: 1180px;
  margin: 0 auto;
  padding: 48px 24px;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.3fr;
  gap: 48px;
}
.footer__brand { font-family: var(--font-sans); font-weight: 600; font-size: 20px; color: var(--ink); }
.footer__about p { margin: 12px 0 0; font-family: var(--font-sans); font-weight: 300; font-size: 14px; line-height: 1.6; color: var(--muted); max-width: 280px; }
.footer__links { display: flex; flex-direction: column; gap: 10px; }
.footer__links .label { margin-bottom: 4px; }
.footer__links a { font-family: var(--font-sans); font-size: 14px; color: var(--ink); }
.footer__links a:hover { color: var(--accent); }
.footer__subscribe .label { display: block; margin-bottom: 12px; }
.footer__bottom {
  max-width: 1180px;
  margin: 0 auto;
  padding: 16px 24px 32px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--mono-fg);
}
.site-footer .site-footer__simple {
  max-width: 1180px;
  margin: 0 auto;
  padding: 32px 24px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--mono-fg);
}

/* ---- pagination ---- */
.pagination { display: flex; justify-content: center; gap: 16px; padding: 0 24px 96px; font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; }
.pagination a { color: var(--ink); }
.pagination a:hover { color: var(--accent); }
.pagination span { color: var(--disabled-fg); }

/* ---- responsive ---- */
@media (max-width: 900px) {
  .post-grid { grid-template-columns: repeat(2, 1fr); }
  .about-hero { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: 1fr; }
  .footer__cols { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .post-grid { grid-template-columns: 1fr; }
  .hero__title { font-size: 40px; }
  .page-title { font-size: 36px; }
  .site-header__left { gap: 20px; }
  .site-nav { gap: 16px; }
}